Bleeder device



1?, 1935. H. W. MESSIINGEE 3 BLEEDER DEVICE Filed May 10, 1935 3 Sheets-Sheet l (j g 1A I nvenlor Dec. 17, 1935. H. W. MESSENGER BLEEDER DEVICE Filed May 10, 1935 3 Sheets-Sheet 2 A llomey 2&24554 H. W. MESSENGER BLEEDER DEVICE Filed May 10, 1935 3 Sheets-Sheet 5 Inventor f/ //l f/kle SJV/ja r Patented Dec. 17, 1935 UNITED STATES ATENT OFFICE 2 Claims.

This invention relates to a bleeder device for the air system of railroad cars, the general object of the invention being to provide means whereby a drain valve can be opened by hand, with automatic means for closing the valve after the air has been drained from the system, the device being so arranged that it will be impossible to open the valve again until the brakes are set.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:--

Figure 1 is a fragmentary elevation of a car showing the auxiliary reservoir and brake cylinder and with the invention in use thereon.

Figure 2 is a bottom plan view of Figure 1.

Figure 3 is an end view of Figure 1.

Figure 4 is a fragmentary elevation of the brake cylinder and piston, with parts in section and with the piston extended.

Figure 5 is a section on the line of Figure 3 and showing the pull car pulled out with its notch engaging a wall of the opening in the bracket or hanger.

Figure 6 is a perspective view showing how the disk is connected with the piston.

Figure 7 is a view of the trip lever.

Figure 8 is a view of one of the pull rods.

Figure 9 is a view of the bracket to which the trip lever is pivoted.

In these drawings the numeral l indicates the auxiliary reservoir which is provided with the drain valve 2 and the numeral 3 indicates the brake cylinder having an extension 4 and the numeral 5 indicates the piston rod, all these parts being of the usual or any desired construction. The valve is operated by the pull rods 6 which extend in opposite direction beyond the sides of the car and are connected to the valve by the links I, the outer ends of the rods passing through holes 8 in the hangers 9 attached to the bottom of a car. Each rod 6 is formed with a notch iii so that when the rod is pulled outwardly it opens the valve and by having the notch engage a wall of the hole 8 the rod will be held in position with the valve open.

A substantially V-shaped bracket II is fastened to the cylinder head as shown at l2 and has a depending part it adjacent its bight which rests on the extension 4 and this bracket pivotally supports the trip lever M as shown at Hi, the trip lever having a forked end it which fits 5 over the piston rod 5. Cables H are connected to the upper end of the trip lever and said cables pass over the pulleys it which are arranged as shown in Figure 2 and the cables are connected to the rods 6 adjacent the notches. A disk i9 10 has a collar 2E3 thereon which is fastened to the outer end of the piston rod 5 by a set screw When the air is to be drained from the air system of a car, after the engine has been uncoupled from the cars the pull rods are pulled outwardly to open the valves so as to drain the air from the system and the rods are manipulated to cause the notches it to engage the Walls or the holes 8 as shown in Figure 5 so that these rods are held in position with the valves open. As the air drains from the system the piston goes back to normal position and as this occurs the disk it will hit the iorked end of the lever 84 which exerts a pull upon the cables H and this pull shifts the pull rods so that the notches are disengaged from the holes so as to cause the valve to close. A pull rod. cannot be moved to open the valve again until the brakes are set and the piston in projected position which makes this device a safety attachment. It will of course be understood that the parts are differently arranged on different types of cars through the operation will be the same.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

t is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope 40 of the appended claims.

What is claimed is:

1. Drain means for air system for railway cars including a drain valve, a cylinder and a piston,

a pull rod connected with the valve, a bracket having a hole therein through which the rod passes, a notch in the rod for engaging a wall of the hole for holding the rod in position with the valve open, a trip lever pivotally supported from the cylinder, a part on the piston rod for engaging the lever when the piston is in normal position for tripping the lever, a cable connecting the lever with the pull rod for moving the rod to released position when the lever is tripped and guide pulleys for the cable.

2. Drain means for the air system of a railway car including a drain valve, a cylinder and a piston, a pair of oppositely extending pull rods having their inner ends connected with the valve, a hanger for each rod having a hole therein through which the rod passes, and notches in each of the rods for engaging the Wall of the hole for holding the rods in position With the valve open, a trip lever pivotally supported from the cylinder, cables connecting the lever with the rods, pulleys for the cables, a disk connected with the piston rod and engaging the lever to trip the same when the piston returns to normal 5 position.

HERBERT W. MESSINGER. 

